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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1010) FairScheduler: decouple container scheduling from nodemanager heartbeats
Date Tue, 01 Oct 2013 07:01:41 GMT

    [ https://issues.apache.org/jira/browse/YARN-1010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13782674#comment-13782674
] 

Hadoop QA commented on YARN-1010:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12606047/YARN-1010.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 2 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/2053//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/2053//console

This message is automatically generated.

> FairScheduler: decouple container scheduling from nodemanager heartbeats
> ------------------------------------------------------------------------
>
>                 Key: YARN-1010
>                 URL: https://issues.apache.org/jira/browse/YARN-1010
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: scheduler
>    Affects Versions: 2.1.0-beta
>            Reporter: Alejandro Abdelnur
>            Assignee: Wei Yan
>            Priority: Critical
>         Attachments: YARN-1010.patch, YARN-1010.patch
>
>
> Currently scheduling for a node is done when a node heartbeats.
> For large cluster where the heartbeat interval is set to several seconds this delays
scheduling of incoming allocations significantly.
> We could have a continuous loop scanning all nodes and doing scheduling. If there is
availability AMs will get the allocation in the next heartbeat after the one that placed the
request.



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